丹丹ㄉ旋轉 很好玩ㄛ

一進來我就去facebook社團電腦圖學2020

然後去下載一個連結 

下載那個glut32.dll [win32]還有[data]裡面的data都放進去window資料夾裡面

就可以跑出這ㄍ了哦

它可以讓你學習怎麼知道怎麼旋轉 雖然我本來就大概知道啦嘻嘻

但還是給妳們這些廣大的部落客看一下

再來就是用freeglut啦~~

讓你用滑鼠就可以動那個紅色球球ㄛ

雖然這張圖你可能看不出來啦

但是就是老師改了一些東西 所以讓這顆球停下來

和不能用鍵盤控制球的大小之外

現在你可以用滑鼠左右拉控制他的x軸ㄛ

然後就可以讓他滾滾滾

超酷

給你程式碼

#ifdef __APPLE__

#include <GLUT/glut.h>

#else

#include <GL/glut.h>

#endif

#include <stdlib.h>

static int slices = 16;

static int stacks = 16;

/* GLUT callback Handlers */

static void resize(int width, int height)

{

    const float ar = (float) width / (float) height;

    glViewport(0, 0, width, height);

    glMatrixMode(GL_PROJECTION);

    glLoadIdentity();

    glFrustum(-ar, ar, -1.0, 1.0, 2.0, 100.0);

    glMatrixMode(GL_MODELVIEW);

    glLoadIdentity() ;

}

float myAngle=0;

static void display(void)

{

    const double t = glutGet(GLUT_ELAPSED_TIME) / 1000.0;

    const double a = myAngle;

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3d(1,0,0);

    glPushMatrix();

        glTranslated(-2.4,1.2,-6);

        glRotated(60,1,0,0);

        glRotated(a,0,0,1);

        glutSolidSphere(1,slices,stacks);

    glPopMatrix();

    glPushMatrix();

        glTranslated(0,1.2,-6);

        glRotated(60,1,0,0);

        glRotated(a,0,0,1);

        glutSolidCone(1,1,slices,stacks);

    glPopMatrix();

    glPushMatrix();

        glTranslated(2.4,1.2,-6);

        glRotated(60,1,0,0);

        glRotated(a,0,0,1);

        glutSolidTorus(0.2,0.8,slices,stacks);

    glPopMatrix();

    glPushMatrix();

        glTranslated(-2.4,-1.2,-6);

        glRotated(60,1,0,0);

        glRotated(a,0,0,1);

        glutWireSphere(1,slices,stacks);

    glPopMatrix();

    glPushMatrix();

        glTranslated(0,-1.2,-6);

        glRotated(60,1,0,0);

        glRotated(a,0,0,1);

        glutWireCone(1,1,slices,stacks);

    glPopMatrix();

    glPushMatrix();

        glTranslated(2.4,-1.2,-6);

        glRotated(60,1,0,0);

        glRotated(a,0,0,1);

        glutWireTorus(0.2,0.8,slices,stacks);

    glPopMatrix();

    glutSwapBuffers();

}

static void key(unsigned char key, int x, int y)

{

    switch (key)

    {

        case 27 :

        case 'q':

            exit(0);

            break;

        case '+':

            slices++;

            stacks++;

            break;

        case '-':

            if (slices>3 && stacks>3)

            {

                slices--;

                stacks--;

            }

            break;

    }

    glutPostRedisplay();

}

static void idle(void)

{

    glutPostRedisplay();

}

const GLfloat light_ambient[]  = { 0.0f, 0.0f, 0.0f, 1.0f };

const GLfloat light_diffuse[]  = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat light_position[] = { 2.0f, 5.0f, 5.0f, 0.0f };

const GLfloat mat_ambient[]    = { 0.7f, 0.7f, 0.7f, 1.0f };

const GLfloat mat_diffuse[]    = { 0.8f, 0.8f, 0.8f, 1.0f };

const GLfloat mat_specular[]   = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat high_shininess[] = { 100.0f };

/* Program entry point */

void motion(int x,int y)

{

    myAngle=x;

}

int main(int argc, char *argv[])

{

    glutInit(&argc, argv);

    glutInitWindowSize(640,480);

    glutInitWindowPosition(10,10);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("GLUT Shapes");

    glutReshapeFunc(resize);

    glutDisplayFunc(display);

    glutMotionFunc(motion);

    glutKeyboardFunc(key);

    glutIdleFunc(idle);

    glClearColor(1,1,1,1);

    glEnable(GL_CULL_FACE);

    glCullFace(GL_BACK);

    glEnable(GL_DEPTH_TEST);

    glDepthFunc(GL_LESS);

    glEnable(GL_LIGHT0);

    glEnable(GL_NORMALIZE);

    glEnable(GL_COLOR_MATERIAL);

    glEnable(GL_LIGHTING);

    glLightfv(GL_LIGHT0, GL_AMBIENT,  light_ambient);

    glLightfv(GL_LIGHT0, GL_DIFFUSE,  light_diffuse);

    glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);

    glLightfv(GL_LIGHT0, GL_POSITION, light_position);

    glMaterialfv(GL_FRONT, GL_AMBIENT,   mat_ambient);

    glMaterialfv(GL_FRONT, GL_DIFFUSE,   mat_diffuse);

    glMaterialfv(GL_FRONT, GL_SPECULAR,  mat_specular);

    glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);

    glutMainLoop();

    return EXIT_SUCCESS;

}

再來 我要教一個讓你茶壺可以倒水的東東ㄛ

很厲害ㄅ 想做就造我的說

你就把上禮拜的茶壺移動

然後改一改功能就變成可以rotate了ㄛ

是不是超猛ㄉ

像這樣

一樣 程式碼送你辣

#include <GL/glut.h>

float myAngle=0; ///這裡是-1.0 ~ +1.0的座標

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); ///清畫面

    glPushMatrix();

        glRotatef(myAngle, 0,0,1);

        glutSolidTeapot( 0.3 );

    glPopMatrix();

    glutSwapBuffers();

}

void motion(int x ,int y)

{

    myAngle = x;

    display();

}

int main(int argc, char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week 04 rotate");

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutMainLoop();

}

可是這樣你會發現 欸?

怎麼我的茶壺每次重按位置都會跑回去啊

所以我們打算再次改良 讓他會記得上次位置在哪

給你程式碼辣辣辣

#include <GL/glut.h>

float myAngle=0; ///這裡是-1.0 ~ +1.0的座標

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); ///清畫面

    glPushMatrix();

        glRotatef(myAngle, 0,0,1);

        glutSolidTeapot( 0.3 );

    glPopMatrix();

    glutSwapBuffers();

}

int oldX=0;

void mouse(int button,int state, int x,int y)

{

    if(state==GLUT_DOWN) oldX = x;

}

void motion(int x ,int y)

{

    myAngle += (x-oldX);

    display();

}

int main(int argc, char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week 04 rotate");

    glutMotionFunc(motion);

    glutMouseFunc(mouse);

    glutDisplayFunc(display);

    glutMainLoop();

}